My major research interests are in the fundamental interactions of nature. Mostly, I study new gauge symmetries as the physics beyond the standard model. A new gauge interaction might be important in understanding the dark matter sector of the universe (e.g., this illustration). Since we do not know where this new fundamental force is hidden or what it couples to, a proper investigation requires studying broad areas of the particle physics. I am also interested in the formal aspects of the strong interaction (QCD), which is well known but still mysterious because of its non-perturbative nature.